A Historic Icon of Communication and Radio Technology Listen to This

The Queen Mary is known not only for its luxurious accommodations and impressive size, but also her rich history in communications and amateur radio capabilities. Visitors can tour the ship's radio room and learn about its fascinating history in communications technology. The Queen Mary's legacy in this field is an important part of its overall historical significance and continues to be celebrated by those interested in both maritime history and amateur radio operations. 

Like all other vessels of her era, The Queen Mary used maritime MF and HF radio frequencies to communicate with other ships and with shoreside high seas radio stations. Most of the world’s shipping lines contracted with radio companies to provide equipment and skilled radiomen for their ships, the largest being Marconi’s Wireless Telegraph Company. Cunard Lines selected the much smaller International Marine Radio Company to provide their ships with radio equipment and operators. IMRC designed and custom-built most of the equipment used on Cunard liners, and employed the radiomen who maintained and operated it. Some of that IMRC-built equipment is still on display in the Wireless Room. IMRC radiomen sailed on every voyage of The Queen Mary, using the radio callsign GBTT, providing communications in support of inter-ship safety, navigation, weather, news reports, ship’s business, crew and passenger messages, and even radio-to-landline telephone calling for those who would pay the rather high prices for that service. Except for the ship-to-shore radiotelephone calls, most other traffic was passed using Morse code radiotelegraphy. In this era, radiotelegraphy was more efficient and reliable, being able to get through noise and signal fading much better than the AM and SSB voice modes. 

Even into the 1950s and 1960s, when amateur radio became increasingly popular, IMRC radiomen weren’t much interested in tuning-in and operating on the ham radio frequencies. Indeed, after working a watch of four to six hours of pretty much constantly sending and copying Morse code traffic, the radiomen had little desire to do more of the same on the ham bands on their own time.

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